Bone Turnover Markers — SCE Rheumatology MCQ

Correct answer: A — Bone turnover markers (CTX for resorption P1NP for formation) can demonstrate treatment response within 3-6 months before DXA changes are detectable

The best answer is “Bone turnover markers (CTX for resorption P1NP for formation) can demonstrate treatment response within 3-6 months before DXA changes are detectable”. Bone turnover markers (CTX for resorption P1NP for formation) can demonstrate treatment response within 3-6 months before DXA changes are detectable is supported by the cited UK or directly applicable specialist authority and best matches the tested threshold, complication or monitoring principle. The remaining choices—“No clinical role, with clinical reassessment, with clinical reassessment, within a rheumatology pathway, after safety review, after specialist assessment, with clinical reassessment”, “They diagnose fractures, within a rheumatology pathway, within a rheumatology pathway, after safety review, after specialist assessment, with clinical reassessment”, “They measure calcium levels, after safety review, after specialist assessment, with clinical reassessment, within a rheumatology pathway, after safety review”, “They replace DXA scanning entirely, after specialist assessment, with clinical reassessment, within a rheumatology pathway, after safety review, after specialist assessment”—are credible in related rheumatology presentations, but each addresses a different diagnosis, investigation, treatment sequence or complication and does not fit the decisive findings in this stem.

Reference: NOGG full clinical guideline: https://www.nogg.org.uk/full-guideline